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8309c1ab | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | /////////////////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // ZDC digitizer class // | |
21 | // // | |
22 | /////////////////////////////////////////////////////////////////////////////// | |
23 | ||
24 | #include <stdlib.h> | |
25 | ||
26 | // --- ROOT system | |
27 | #include <TTree.h> | |
28 | #include <TFile.h> | |
29 | #include <TNtuple.h> | |
30 | #include <TRandom.h> | |
31 | ||
32 | // --- AliRoot header files | |
33 | #include "AliLog.h" | |
34 | #include "AliRun.h" | |
35 | #include "AliHeader.h" | |
36 | #include "AliGenHijingEventHeader.h" | |
37 | #include "AliRunDigitizer.h" | |
38 | #include "AliRunLoader.h" | |
78d18275 | 39 | #include "AliCDBManager.h" |
48642b09 | 40 | #include "AliCDBEntry.h" |
8309c1ab | 41 | #include "AliZDCSDigit.h" |
42 | #include "AliZDCDigit.h" | |
43 | #include "AliZDCFragment.h" | |
44 | #include "AliZDCDigitizer.h" | |
8a2624cc | 45 | |
46 | class AliCDBStorage; | |
47 | class AliZDCCalibData; | |
8309c1ab | 48 | |
49 | ClassImp(AliZDCDigitizer) | |
50 | ||
51 | ||
52 | //____________________________________________________________________________ | |
53 | AliZDCDigitizer::AliZDCDigitizer() | |
54 | { | |
55 | // Default constructor | |
56 | ||
57 | } | |
58 | ||
59 | //____________________________________________________________________________ | |
60 | AliZDCDigitizer::AliZDCDigitizer(AliRunDigitizer* manager): | |
61 | AliDigitizer(manager) | |
62 | { | |
abf60186 | 63 | fIsCalibration=0; //By default the simulation doesn't create calib. data |
78d18275 | 64 | // Get calibration data |
7f73eb6b | 65 | fCalibData = GetCalibData(); |
31af5828 | 66 | if(fIsCalibration!=0) printf("\t **** AliZDCDigitizer -> Creating calibration data (pedestals)\n"); |
78d18275 | 67 | |
8309c1ab | 68 | } |
69 | ||
70 | //____________________________________________________________________________ | |
71 | AliZDCDigitizer::~AliZDCDigitizer() | |
72 | { | |
73 | // Destructor | |
74 | ||
75 | } | |
76 | ||
77 | ||
cc2abffd | 78 | //____________________________________________________________________________ |
79 | AliZDCDigitizer::AliZDCDigitizer(const AliZDCDigitizer &digitizer): | |
80 | AliDigitizer() | |
81 | { | |
82 | // Copy constructor | |
83 | ||
84 | for(Int_t i=0; i<6; i++){ | |
85 | for(Int_t j=0; j<5; j++){ | |
86 | fPMGain[i][j] = digitizer.fPMGain[i][j]; | |
87 | } | |
88 | } | |
89 | for(Int_t i=0; i<2; i++) fADCRes[i] = digitizer.fADCRes[i]; | |
90 | fIsCalibration = digitizer.fIsCalibration; | |
91 | fCalibData = digitizer.fCalibData; | |
92 | ||
93 | } | |
94 | ||
8309c1ab | 95 | //____________________________________________________________________________ |
96 | Bool_t AliZDCDigitizer::Init() | |
97 | { | |
48642b09 | 98 | // Initialize the digitizer |
99 | // NB -> PM gain vs. HV & ADC resolutions will move to DCDB *************** | |
7f73eb6b | 100 | for(Int_t j = 0; j < 5; j++){ |
101 | fPMGain[0][j] = 50000.; | |
102 | fPMGain[1][j] = 100000.; | |
103 | fPMGain[2][j] = 100000.; | |
a017f01b | 104 | fPMGain[3][j] = 50000.; |
105 | fPMGain[4][j] = 100000.; | |
106 | fPMGain[5][j] = 100000.; | |
7f73eb6b | 107 | } |
108 | // ADC Caen V965 | |
109 | fADCRes[0] = 0.0000008; // ADC Resolution high gain: 200 fC/adcCh | |
110 | fADCRes[1] = 0.0000064; // ADC Resolution low gain: 25 fC/adcCh | |
8309c1ab | 111 | |
112 | return kTRUE; | |
113 | } | |
114 | ||
115 | //____________________________________________________________________________ | |
116 | void AliZDCDigitizer::Exec(Option_t* /*option*/) | |
117 | { | |
48642b09 | 118 | // Execute digitization |
8309c1ab | 119 | |
7f73eb6b | 120 | Float_t pm[5][5]; // !!! 2nd ZDC set added (needed for trigger purposes!) |
121 | // *** 1st 3 arrays are digits from REAL (simulated) hits | |
122 | // *** last 2 are copied from simulated digits | |
123 | // --- pm[0][...] = light in ZN right [C, Q1, Q2, Q3, Q4] | |
124 | // --- pm[1][...] = light in ZP right [C, Q1, Q2, Q3, Q4] | |
48642b09 | 125 | // --- pm[2][...] = light in ZEM [x, 1, 2, x, x] |
7f73eb6b | 126 | // --- pm[3][...] = light in ZN left [C, Q1, Q2, Q3, Q4] ->NEW! |
127 | // --- pm[4][...] = light in ZP left [C, Q1, Q2, Q3, Q4] ->NEW! | |
128 | ||
129 | for (Int_t iSector1=0; iSector1<5; iSector1++) | |
abf60186 | 130 | for (Int_t iSector2=0; iSector2<5; iSector2++){ |
8309c1ab | 131 | pm[iSector1][iSector2] = 0; |
132 | } | |
8309c1ab | 133 | |
134 | // impact parameter and number of spectators | |
135 | Float_t impPar = -1; | |
136 | Int_t specN = 0; | |
137 | Int_t specP = 0; | |
138 | ||
139 | // loop over input streams | |
abf60186 | 140 | for (Int_t iInput = 0; iInput<fManager->GetNinputs(); iInput++){ |
8309c1ab | 141 | |
142 | // get run loader and ZDC loader | |
143 | AliRunLoader* runLoader = | |
144 | AliRunLoader::GetRunLoader(fManager->GetInputFolderName(iInput)); | |
145 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
146 | if (!loader) continue; | |
147 | ||
148 | // load sdigits | |
149 | loader->LoadSDigits(); | |
150 | TTree* treeS = loader->TreeS(); | |
151 | if (!treeS) continue; | |
152 | AliZDCSDigit sdigit; | |
153 | AliZDCSDigit* psdigit = &sdigit; | |
154 | treeS->SetBranchAddress("ZDC", &psdigit); | |
155 | ||
156 | // loop over sdigits | |
abf60186 | 157 | for (Int_t iSDigit=0; iSDigit<treeS->GetEntries(); iSDigit++){ |
8309c1ab | 158 | treeS->GetEntry(iSDigit); |
7f73eb6b | 159 | // |
8309c1ab | 160 | if (!psdigit) continue; |
abf60186 | 161 | if ((sdigit.GetSector(1) < 0) || (sdigit.GetSector(1) > 4)){ |
8309c1ab | 162 | AliError(Form("\nsector[0] = %d, sector[1] = %d\n", |
163 | sdigit.GetSector(0), sdigit.GetSector(1))); | |
164 | continue; | |
165 | } | |
7f73eb6b | 166 | // |
48642b09 | 167 | pm[(sdigit.GetSector(0))-1][sdigit.GetSector(1)] += sdigit.GetLightPM(); |
7f73eb6b | 168 | /*printf("\n\t Detector %d, Tower %d -> pm[%d][%d] = %.0f \n", |
48642b09 | 169 | sdigit.GetSector(0), sdigit.GetSector(1),sdigit.GetSector(0)-1, |
170 | sdigit.GetSector(1), pm[sdigit.GetSector(0)-1][sdigit.GetSector(1)]); // Chiara debugging! | |
abf60186 | 171 | */ |
8309c1ab | 172 | } |
173 | ||
8309c1ab | 174 | loader->UnloadSDigits(); |
175 | ||
176 | // get the impact parameter and the number of spectators in case of hijing | |
177 | if (!runLoader->GetAliRun()) runLoader->LoadgAlice(); | |
178 | AliHeader* header = runLoader->GetAliRun()->GetHeader(); | |
179 | if (!header) continue; | |
180 | AliGenEventHeader* genHeader = header->GenEventHeader(); | |
181 | if (!genHeader) continue; | |
182 | if (!genHeader->InheritsFrom(AliGenHijingEventHeader::Class())) continue; | |
183 | impPar = ((AliGenHijingEventHeader*) genHeader)->ImpactParameter(); | |
85a96223 | 184 | // |
185 | specN = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsn(); | |
186 | specP = ((AliGenHijingEventHeader*) genHeader)->ProjSpectatorsp(); | |
78d18275 | 187 | AliDebug(2, Form("\n AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", |
8309c1ab | 188 | impPar, specN, specP)); |
7f73eb6b | 189 | printf("\n\t AliZDCDigitizer -> b = %f fm, Nspecn = %d, Nspecp = %d\n", impPar, specN, specP); |
8309c1ab | 190 | } |
191 | ||
192 | // add spectators | |
193 | if (impPar >= 0) { | |
194 | Int_t freeSpecN, freeSpecP; | |
195 | Fragmentation(impPar, specN, specP, freeSpecN, freeSpecP); | |
78d18275 | 196 | printf("\n\t AliZDCDigitizer ---- Adding signal for %d free spectator n\n",freeSpecN); |
8309c1ab | 197 | SpectatorSignal(1, freeSpecN, pm); |
78d18275 | 198 | printf("\t AliZDCDigitizer ---- Adding signal for %d free spectator p\n\n",freeSpecP); |
8309c1ab | 199 | SpectatorSignal(2, freeSpecP, pm); |
200 | } | |
201 | ||
8a2624cc | 202 | |
8309c1ab | 203 | // get the output run loader and loader |
204 | AliRunLoader* runLoader = | |
205 | AliRunLoader::GetRunLoader(fManager->GetOutputFolderName()); | |
206 | AliLoader* loader = runLoader->GetLoader("ZDCLoader"); | |
207 | if (!loader) { | |
208 | AliError("no ZDC loader found"); | |
209 | return; | |
210 | } | |
211 | ||
212 | // create the output tree | |
213 | const char* mode = "update"; | |
214 | if (runLoader->GetEventNumber() == 0) mode = "recreate"; | |
215 | loader->LoadDigits(mode); | |
216 | loader->MakeTree("D"); | |
217 | TTree* treeD = loader->TreeD(); | |
218 | AliZDCDigit digit; | |
219 | AliZDCDigit* pdigit = &digit; | |
220 | const Int_t kBufferSize = 4000; | |
221 | treeD->Branch("ZDC", "AliZDCDigit", &pdigit, kBufferSize); | |
222 | ||
223 | // Create digits | |
7f73eb6b | 224 | Int_t sector[2], sectorL[2]; |
225 | Int_t digi[2], digiL[2]; | |
abf60186 | 226 | for(sector[0]=1; sector[0]<=3; sector[0]++){ |
227 | for(sector[1]=0; sector[1]<5; sector[1]++){ | |
228 | if((sector[0]==3) && ((sector[1]<1) || (sector[1]>2))) continue; | |
7f73eb6b | 229 | for (Int_t res=0; res<2; res++){ |
abf60186 | 230 | digi[res] = Phe2ADCch(sector[0], sector[1], pm[sector[0]-1][sector[1]], res) |
48642b09 | 231 | + Pedestal(sector[0], sector[1], res); |
7f73eb6b | 232 | } |
abf60186 | 233 | /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", |
234 | sector[0], sector[1], digi[0], digi[1]); // Chiara debugging! | |
235 | */ | |
236 | // | |
237 | new(pdigit) AliZDCDigit(sector, digi); | |
8309c1ab | 238 | treeD->Fill(); |
7f73eb6b | 239 | // |
240 | // --- Adding digits for 2nd ZDC set (left side w.r.t. IP) --- | |
241 | // --- they are copied from right ZDC digits | |
242 | if(sector[0]==1 || sector[0]==2){ | |
243 | sectorL[0] = sector[0]+3; | |
244 | sectorL[1] = sector[1]; | |
245 | for (Int_t res=0; res<2; res++){ | |
246 | digiL[res] = Phe2ADCch(sectorL[0], sectorL[1], pm[sector[0]-1][sector[1]], res) | |
247 | + Pedestal(sectorL[0], sectorL[1], res); | |
248 | } | |
abf60186 | 249 | /*printf("\t DIGIT added -> det = %d, quad = %d - digi[0,1] = [%d, %d]\n", |
250 | sectorL[0], sectorL[1], digiL[0], digiL[1]); // Chiara debugging! | |
251 | */ | |
252 | // | |
253 | new(pdigit) AliZDCDigit(sectorL, digiL); | |
254 | treeD->Fill(); | |
7f73eb6b | 255 | } |
256 | // | |
abf60186 | 257 | //printf("\t AliZDCDigitizer -> TreeD has %d entries\n",(Int_t) treeD->GetEntries()); |
8309c1ab | 258 | } |
abf60186 | 259 | } |
8309c1ab | 260 | // write the output tree |
261 | loader->WriteDigits("OVERWRITE"); | |
262 | loader->UnloadDigits(); | |
263 | } | |
264 | ||
265 | ||
266 | //_____________________________________________________________________________ | |
267 | void AliZDCDigitizer::Fragmentation(Float_t impPar, Int_t specN, Int_t specP, | |
268 | Int_t &freeSpecN, Int_t &freeSpecP) const | |
269 | { | |
270 | // simulate fragmentation of spectators | |
271 | ||
272 | Int_t zz[100], nn[100]; | |
273 | AliZDCFragment frag(impPar); | |
274 | for (Int_t j=0; j<=99; j++){ | |
275 | zz[j] =0; | |
276 | nn[j] =0; | |
277 | } | |
278 | ||
279 | // Fragments generation | |
280 | Int_t nAlpha; | |
281 | frag.GenerateIMF(zz, nAlpha); | |
282 | ||
283 | // Attach neutrons | |
284 | Int_t ztot=0; | |
285 | Int_t ntot=0; | |
286 | frag.AttachNeutrons(zz, nn, ztot, ntot); | |
287 | freeSpecN = specN-ntot-2*nAlpha; | |
288 | freeSpecP = specP-ztot-2*nAlpha; | |
289 | if(freeSpecN<0) freeSpecN=0; | |
290 | if(freeSpecP<0) freeSpecP=0; | |
291 | AliDebug(2, Form("FreeSpn = %d, FreeSpp = %d", freeSpecN, freeSpecP)); | |
292 | } | |
293 | ||
294 | //_____________________________________________________________________________ | |
295 | void AliZDCDigitizer::SpectatorSignal(Int_t SpecType, Int_t numEvents, | |
296 | Float_t pm[3][5]) const | |
297 | { | |
298 | // add signal of the spectators | |
299 | ||
300 | TFile* file = NULL; | |
301 | if (SpecType == 1) { // --- Signal for spectator neutrons | |
302 | file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZNsignalntu.root"); | |
303 | } else if (SpecType == 2) { // --- Signal for spectator protons | |
304 | file = TFile::Open("$ALICE/$ALICE_LEVEL/ZDC/ZPsignalntu.root"); | |
305 | } | |
306 | if (!file || !file->IsOpen()) { | |
307 | AliError("Opening of file failed"); | |
308 | return; | |
309 | } | |
310 | ||
311 | TNtuple* zdcSignal = (TNtuple*) file->Get("ZDCSignal"); | |
312 | Int_t nentries = (Int_t) zdcSignal->GetEntries(); | |
313 | ||
314 | Float_t *entry, hitsSpec[7]; | |
315 | Int_t pl, i, j, k, iev=0, rnd[125], volume[2]; | |
48642b09 | 316 | for(pl=0;pl<125;pl++) rnd[pl] = 0; |
8309c1ab | 317 | if (numEvents > 125) { |
318 | AliWarning(Form("numEvents (%d) is larger than 125", numEvents)); | |
319 | numEvents = 125; | |
320 | } | |
321 | for(pl=0;pl<numEvents;pl++){ | |
322 | rnd[pl] = (Int_t) (9999*gRandom->Rndm()); | |
85a96223 | 323 | if(rnd[pl] >= 9999) rnd[pl] = 9998; |
8309c1ab | 324 | //printf(" rnd[%d] = %d\n",pl,rnd[pl]); |
325 | } | |
326 | // Sorting vector in ascending order with C function QSORT | |
327 | qsort((void*)rnd,numEvents,sizeof(Int_t),comp); | |
328 | do{ | |
329 | for(i=0; i<nentries; i++){ | |
330 | zdcSignal->GetEvent(i); | |
331 | entry = zdcSignal->GetArgs(); | |
332 | if(entry[0] == rnd[iev]){ | |
333 | for(k=0; k<2; k++) volume[k] = (Int_t) entry[k+1]; | |
334 | for(j=0; j<7; j++) hitsSpec[j] = entry[j+3]; | |
48642b09 | 335 | // |
8309c1ab | 336 | Float_t lightQ = hitsSpec[4]; |
337 | Float_t lightC = hitsSpec[5]; | |
78d18275 | 338 | AliDebug(3, Form("SpectatorSignal -> vol = (%d, %d), lightQ = %.0f, lightC = %.0f", |
8309c1ab | 339 | volume[0], volume[1], lightQ, lightC)); |
48642b09 | 340 | //printf("\n Volume = (%d, %d), lightQ = %.0f, lightC = %.0f", |
341 | // volume[0], volume[1], lightQ, lightC); | |
8309c1ab | 342 | if (volume[0] < 3) { // ZN or ZP |
343 | pm[volume[0]-1][0] += lightC; | |
344 | pm[volume[0]-1][volume[1]] += lightQ; | |
48642b09 | 345 | //printf("\n pm[%d][0] = %.0f, pm[%d][%d] = %.0f\n",(volume[0]-1),pm[volume[0]-1][0], |
346 | // (volume[0]-1),volume[1],pm[volume[0]-1][volume[1]]); | |
347 | } | |
348 | else { | |
349 | if (volume[1] == 1) pm[2][1] += lightC; // ZEM 1 | |
350 | else pm[2][2] += lightQ; // ZEM 2 | |
351 | //printf("\n pm[2][1] = %.0f, pm[2][2] = %.0f\n",pm[2][1],pm[2][2]); | |
352 | } | |
8309c1ab | 353 | } |
354 | else if(entry[0] > rnd[iev]){ | |
355 | iev++; | |
356 | continue; | |
357 | } | |
358 | } | |
359 | }while(iev<numEvents); | |
360 | ||
361 | file->Close(); | |
362 | delete file; | |
363 | } | |
364 | ||
365 | ||
366 | //_____________________________________________________________________________ | |
367 | Int_t AliZDCDigitizer::Phe2ADCch(Int_t Det, Int_t Quad, Float_t Light, | |
368 | Int_t Res) const | |
369 | { | |
48642b09 | 370 | // Evaluation of the ADC channel corresponding to the light yield Light |
8a2624cc | 371 | Int_t vADCch = (Int_t) (Light * fPMGain[Det-1][Quad] * fADCRes[Res]); |
78d18275 | 372 | //printf("\t Phe2ADCch -> det %d quad %d - phe %.0f ADC %d\n", Det,Quad,Light,ADCch); |
7f73eb6b | 373 | |
8a2624cc | 374 | return vADCch; |
48642b09 | 375 | } |
8309c1ab | 376 | |
48642b09 | 377 | //_____________________________________________________________________________ |
378 | Int_t AliZDCDigitizer::Pedestal(Int_t Det, Int_t Quad, Int_t Res) const | |
379 | { | |
8a2624cc | 380 | // Returns a pedestal for detector det, PM quad, channel with res. |
381 | // | |
abf60186 | 382 | Float_t PedValue; |
dbc8d7fc | 383 | |
abf60186 | 384 | // Normal run |
385 | if(fIsCalibration == 0){ | |
386 | Float_t meanPed, Pedwidth; | |
387 | Int_t index=0; | |
388 | if(Det==1|| Det==2) index = 10*(Det-1)+Quad+5*Res; // ZN1, ZP1 | |
389 | else if(Det==3) index = 10*(Det-1)+(Quad-1)+Res; // ZEM | |
390 | else if(Det==4|| Det==5) index = 10*(Det-2)+Quad+5*Res+4; // ZN2, ZP2 | |
391 | meanPed = fCalibData->GetMeanPed(index); | |
392 | Pedwidth = fCalibData->GetMeanPedWidth(index); | |
393 | PedValue = gRandom->Gaus(meanPed,Pedwidth); | |
394 | // | |
395 | /*printf("\t Pedestal -> det = %d, quad = %d, res = %d - Ped[%d] = %d\n", | |
396 | Det, Quad, index,(Int_t) PedValue); // Chiara debugging! | |
397 | */ | |
398 | } | |
48642b09 | 399 | |
7f73eb6b | 400 | // To create calibration object |
abf60186 | 401 | else PedValue = gRandom->Gaus((40.+10.*gRandom->Rndm()),5.); |
402 | ||
dbc8d7fc | 403 | |
abf60186 | 404 | return (Int_t) PedValue; |
8309c1ab | 405 | } |
406 | ||
407 | //_____________________________________________________________________________ | |
78d18275 | 408 | AliCDBStorage* AliZDCDigitizer::SetStorage(const char *uri) |
8309c1ab | 409 | { |
8309c1ab | 410 | |
78d18275 | 411 | Bool_t deleteManager = kFALSE; |
48642b09 | 412 | |
78d18275 | 413 | AliCDBManager *manager = AliCDBManager::Instance(); |
414 | AliCDBStorage *defstorage = manager->GetDefaultStorage(); | |
48642b09 | 415 | |
78d18275 | 416 | if(!defstorage || !(defstorage->Contains("ZDC"))){ |
417 | AliWarning("No default storage set or default storage doesn't contain ZDC!"); | |
418 | manager->SetDefaultStorage(uri); | |
419 | deleteManager = kTRUE; | |
420 | } | |
421 | ||
422 | AliCDBStorage *storage = manager->GetDefaultStorage(); | |
423 | ||
424 | if(deleteManager){ | |
425 | AliCDBManager::Instance()->UnsetDefaultStorage(); | |
426 | defstorage = 0; // the storage is killed by AliCDBManager::Instance()->Destroy() | |
427 | } | |
428 | ||
429 | return storage; | |
430 | } | |
48642b09 | 431 | |
78d18275 | 432 | //_____________________________________________________________________________ |
7f73eb6b | 433 | AliZDCCalibData* AliZDCDigitizer::GetCalibData() const |
78d18275 | 434 | { |
4fda3ba1 | 435 | |
436 | // Getting calibration object for ZDC set | |
437 | ||
438 | AliCDBEntry *entry = AliCDBManager::Instance()->Get("ZDC/Calib/Data"); | |
78d18275 | 439 | AliZDCCalibData *calibdata = (AliZDCCalibData*) entry->GetObject(); |
4fda3ba1 | 440 | |
441 | if (!calibdata) AliWarning("No calibration data from calibration database !"); | |
8309c1ab | 442 | |
78d18275 | 443 | return calibdata; |
8309c1ab | 444 | } |
4fda3ba1 | 445 |